PHYS 202 Notes, Week 10
... • The aqueous humor, index of refraction n = 1.336. • The crystalline lens, index of refraction n = 1.437. • The vitreous humor, index of refraction n = 1.336. In order to form a sharp image, the image point of the eye needs to be exactly on the retina surface. Given that the retina is in a fixed lo ...
... • The aqueous humor, index of refraction n = 1.336. • The crystalline lens, index of refraction n = 1.437. • The vitreous humor, index of refraction n = 1.336. In order to form a sharp image, the image point of the eye needs to be exactly on the retina surface. Given that the retina is in a fixed lo ...
chapter34
... The x-direction is the direction of propagation The electric field is assumed to be in the y direction and the magnetic field in the z direction Waves in which the electric and magnetic fields are restricted to being parallel to a pair of perpendicular axes are said to be linearly polarized waves We ...
... The x-direction is the direction of propagation The electric field is assumed to be in the y direction and the magnetic field in the z direction Waves in which the electric and magnetic fields are restricted to being parallel to a pair of perpendicular axes are said to be linearly polarized waves We ...
87essay - PLK Vicwood KT Chong Sixth Form College
... on the wave front in plane of obstacle, such as P, and these send out waves (spherical) as shown propagating behind obstacle. (c) For observable diffraction the wavelength of the waves has to be comparable with the dimension of the opening. Briefly for a ‘slit’ maxima occur due to re-inforcement of ...
... on the wave front in plane of obstacle, such as P, and these send out waves (spherical) as shown propagating behind obstacle. (c) For observable diffraction the wavelength of the waves has to be comparable with the dimension of the opening. Briefly for a ‘slit’ maxima occur due to re-inforcement of ...
Unit 18 - HKU Physics
... an electromagnetic wave. Visible light is of course an electromagnetic wave. Unlike sound or a wave on a string requires a medium through which it can propagate, light can propagate through a vacuum. In fact, electromagnetic waves travel through a vacuum with the maximum speed, c, that any form of e ...
... an electromagnetic wave. Visible light is of course an electromagnetic wave. Unlike sound or a wave on a string requires a medium through which it can propagate, light can propagate through a vacuum. In fact, electromagnetic waves travel through a vacuum with the maximum speed, c, that any form of e ...
Forward Modelling of Propagating Slow Waves in Coronal Loops
... We obtained a slope of 1.4±0.7 (171A channel) and 1.0±0.3 (193A channel) for θ = 90° and 1.3±0.4 (171A channel) and 0.8±0.1(193A channel) for θ = 30°. We have also studied in-depth the theoretical damping behaviour of the slow waves in the case when thermal conduction is not weak. We have found that ...
... We obtained a slope of 1.4±0.7 (171A channel) and 1.0±0.3 (193A channel) for θ = 90° and 1.3±0.4 (171A channel) and 0.8±0.1(193A channel) for θ = 30°. We have also studied in-depth the theoretical damping behaviour of the slow waves in the case when thermal conduction is not weak. We have found that ...
Introduction: When waves encounter obstacles (or openings), they
... shadow of an obstacle is not commonly observed because the light sources are not point sources and secondly the obstacles used are of very large size compared to the wavelength of light. If a shadow of an obstacle is cast by an extended source, say a frosted electric bulb, light from every point on ...
... shadow of an obstacle is not commonly observed because the light sources are not point sources and secondly the obstacles used are of very large size compared to the wavelength of light. If a shadow of an obstacle is cast by an extended source, say a frosted electric bulb, light from every point on ...
Document
... The root-mean-square voltages across the resistor R, capacitor C and inductor L of an RCL series circuit are respectively 4 V, 1 V and 4 V. What is the phase difference between the applied voltage and the current flowing in the circuit? ...
... The root-mean-square voltages across the resistor R, capacitor C and inductor L of an RCL series circuit are respectively 4 V, 1 V and 4 V. What is the phase difference between the applied voltage and the current flowing in the circuit? ...
ISC-Physics-Sample-p..
... a) Using Ampere’s Circuital Law and with the help of a labelled diagram, show that magnetic flux density ‘B’ at a distance r from a long straight conductor is given by : B = μoI/2 r, where the terms have their usual meaning. ...
... a) Using Ampere’s Circuital Law and with the help of a labelled diagram, show that magnetic flux density ‘B’ at a distance r from a long straight conductor is given by : B = μoI/2 r, where the terms have their usual meaning. ...
Some of my Demonstrations in Class
... This demonstration reinforces the double slit experiment by showing what the pattern in the double slit experiment should look like if light is composed of a stream of simple little particles. You can show this effectively in a very low tech way by pouring a stream of cornmeal onto a piece of paper ...
... This demonstration reinforces the double slit experiment by showing what the pattern in the double slit experiment should look like if light is composed of a stream of simple little particles. You can show this effectively in a very low tech way by pouring a stream of cornmeal onto a piece of paper ...
HNRS 227 Lecture #2 Chapters 2 and 3
... The balloon has a net charge as a result of being rubbed. When the balloon is brought near a wall, the net charge on the balloon moves electrons around in the wall. As a result, a small region near the balloon has a net charge of opposite sign than the balloon. The overall wall is still electrical ...
... The balloon has a net charge as a result of being rubbed. When the balloon is brought near a wall, the net charge on the balloon moves electrons around in the wall. As a result, a small region near the balloon has a net charge of opposite sign than the balloon. The overall wall is still electrical ...
22-3 Energy, Momentum and Radiation Pressure
... All waves carry energy, and electromagnetic waves are no exception. We often characterize the energy carried by a wave in terms of its intensity, which is the power per unit area. At a particular point in space that the wave is moving past, the intensity varies as the electric and magnetic fields at ...
... All waves carry energy, and electromagnetic waves are no exception. We often characterize the energy carried by a wave in terms of its intensity, which is the power per unit area. At a particular point in space that the wave is moving past, the intensity varies as the electric and magnetic fields at ...
Document
... are two scientists who studied how electromagnetic waves are formed and how fast they travel. ...
... are two scientists who studied how electromagnetic waves are formed and how fast they travel. ...
CHAPTER 28 Sources Of Magnetic Field
... 9- The faster we carry out any of these changes, the greater the current. 10- If all these experiments are repeated with a coil that has the same shape but different material and different resistance, the current in each case is inversely proportional to the total circuit resistance. This shows that ...
... 9- The faster we carry out any of these changes, the greater the current. 10- If all these experiments are repeated with a coil that has the same shape but different material and different resistance, the current in each case is inversely proportional to the total circuit resistance. This shows that ...
Pre-Lecture 25
... - clouds are semi-transparent to UV, so can still get sunburned on a cloudy day. • Water – transparent in the visible. - This explains why objects look darker when wet: Light is absorbed and re-emitted, bouncing around inside wet region; each bounce loses some energy to material. So less light enter ...
... - clouds are semi-transparent to UV, so can still get sunburned on a cloudy day. • Water – transparent in the visible. - This explains why objects look darker when wet: Light is absorbed and re-emitted, bouncing around inside wet region; each bounce loses some energy to material. So less light enter ...
Physics MCQs part 1 2007
... interference is that the path difference must be An odd multiple of the half wavelength An odd multiple of the whole wavelength An integral multiple of the wavelength An even number of the wavelength If the power of a converging lens is 4 dioptres what is the focal length of the lens? 20 cm 25cm 10 ...
... interference is that the path difference must be An odd multiple of the half wavelength An odd multiple of the whole wavelength An integral multiple of the wavelength An even number of the wavelength If the power of a converging lens is 4 dioptres what is the focal length of the lens? 20 cm 25cm 10 ...
Experiment 1 - 6. Waves-Where does It Come from and Where does
... Now let’s think about interference of two coherent waves. If we regard the two wave sources as point sources, the two surface waves are circular waves. As shown in the picture, the interference of waves at a distance r form the center of the two sources and at an angle θ is determined by path differ ...
... Now let’s think about interference of two coherent waves. If we regard the two wave sources as point sources, the two surface waves are circular waves. As shown in the picture, the interference of waves at a distance r form the center of the two sources and at an angle θ is determined by path differ ...
Chapter 34
... The x-direction is the direction of propagation The electric field is assumed to be in the y direction and the magnetic field in the z direction Waves in which the electric and magnetic fields are restricted to being parallel to a pair of perpendicular axes are said to be linearly polarized waves We ...
... The x-direction is the direction of propagation The electric field is assumed to be in the y direction and the magnetic field in the z direction Waves in which the electric and magnetic fields are restricted to being parallel to a pair of perpendicular axes are said to be linearly polarized waves We ...
Diffraction
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves.Since physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics. Italian scientist Francesco Maria Grimaldi coined the word ""diffraction"" and was the first to record accurate observations of the phenomenon in 1660.While diffraction occurs whenever propagating waves encounter such changes, its effects are generally most pronounced for waves whose wavelength is roughly comparable to the dimensions of the diffracting object or slit. If the obstructing object provides multiple, closely spaced openings, a complex pattern of varying intensity can result. This is due to the addition, or interference, of different parts of a wave that travels to the observer by different paths, where different path lengths result in different phases (see diffraction grating and wave superposition). The formalism of diffraction can also describe the way in which waves of finite extent propagate in free space. For example, the expanding profile of a laser beam, the beam shape of a radar antenna and the field of view of an ultrasonic transducer can all be analyzed using diffraction equations.